I have truck that I am remotely tuning, and this issue has come up. This is a towing tune.
With the stock tune in the truck, the truck is fine and every thing works great, Once he uploads the modified tune, the truck has the following problem.
If you are cruising down the highway with the cruise control on and decide to turn the left directional on the cruise control is turned off. Only happens with using the left turn signal.
If he loads the stock tune back in the problem goes away.
Any ideas on this.